21905620

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{99571}}^1$

素因数の和:99591

約数の個数: 24

約数和(自身を含む): 50184288

約数和(自身を除く): 28278668

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 99571, 199142, 398284, 497855, 995710, 1095281, 1991420, 2190562, 4381124, 5476405, 10952810, 21905620]

約数ペア:

[(1, 21905620), (2, 10952810), (4, 5476405), (5, 4381124), (10, 2190562), (11, 1991420), (20, 1095281), (22, 995710), (44, 497855), (55, 398284), (110, 199142), (220, 99571)]